Use display/interact entities
#help-development
young knoll
sick edge
Yeah but it hast to always be above the player and move with it š¤
young knoll
Make it ride them
signal kettle
hello is it possible to call BerryNoDamage event when in CobaltArmorEquip player have full armor like addding effect?
@EventHandler
public void CobaltArmorEquip(final ArmorEquipEvent event) {
Player player = event.getPlayer();
Bukkit.getScheduler().scheduleSyncRepeatingTask(plugin, () -> {
int amountOfArmor = 0;
for (ItemStack i : player.getInventory().getArmorContents()) {
if (i == null)
continue;
if (i.getType().toString().contains("DIAMOND")) {
amountOfArmor++;
}
}
if (amountOfArmor == 4) { // player has 4 pieces of diamond armor on
player.addPotionEffect(new PotionEffect(PotionEffectType.FIRE_RESISTANCE, 60, 50));
} else if (amountOfArmor < 4) { // player has less then 4 pieces of diamond armor on
player.removePotionEffect(PotionEffectType.FIRE_RESISTANCE);
}
}, 0L, 20L); //0 Tick initial delay, 20 Tick (1 Second) between repeats
}
private void BerryNoDamage(EntityDamageByBlockEvent event) {
if (event.getCause() == EntityDamageEvent.DamageCause.CONTACT) {
event.setCancelled(true);
}
}
}
vocal cloud
Correct me if I'm wrong but wouldn't that queue a task every time they equip armor?
That's a memory leak waiting to happen
ivory sleet
an out of memory error looks plausible lol
river oracle
I've actually done something like this before on accident its much more likely it will lag out the server before the memory loss causes issues
considering most modern machines have so much you'll probably notice the TPS drop xD
ivory sleet
Oh yeah thats true
signal kettle
;/
So is there any other way to somehow check if player have full armor on or not?
I mean isn't it a good idea when I will add before scheduler first a few "safe checks" that will only run check on certain timings?
signal kettle
when I make it without scheduler it's just work like on reverse so when I put 4 pieces then nothing and when i deequip after that one piece of armor then it give me the effect
because on the last one I think it doesn't update?
river oracle
What is the bukkit equivalent of MobEffectList (spigot) or MobEffect (mojang) in spigot
is their anyway to translate?
smoky oak
dunno. anyone know the structure of the namespacedKey Enchantment.getByKey() wants?
oh ffs is there a non-deprecated way to map String -> Enchant
thats not 'list all enchantments then iterate through them'
exotic zinc
weird that it is deprecated. JD doesn't show it as deprecated.
ah maybe because its marked as internal
try NamespacedKey.fromString("Minecraft:" + key)
young knoll
NamespacedKey.minecraft
smoky oak
š
grim hound
hello is it possible to call BerryNoDamage event when in CobaltArmorEquip player...
Good heavens
What an atrocity
wraith dragon
That's a memory leak waiting to happen
how
tacit veldt
Is there any way to simulate enchanting at an enchantment table in code?
Congratulations, I found this
ItemFactory ify = Bukkit.getItemFactory();
ify.enchantWithLevels();
dry hazel
retainAll can work like that
quaint mantle
hello is it possible to call BerryNoDamage event when in CobaltArmorEquip player...
Bros discovering server destruction methods be like š
pseudo hazel
is there a 'common set of sets' in java?
you could filter a set based on if it is present in the other set
spare hazel
how can i create a runnable in bungeecord? (like BukkitRunnable)
quaint mantle
is there a 'common set of sets' in java?
?
spare hazel
how can i create a runnable in bungeecord? (like BukkitRunnable)
can someone help with this?
smoky oak
you could filter a set based on if it is present in the other set
im aware, but i was curious if Set has a method for that?
quaint mantle
can someone help with this?
isnt that just lambda?
pseudo hazel
im aware, but i was curious if Set has a method for that?
not one I know of
grim hound
how can i create a runnable in bungeecord? (like BukkitRunnable)
Do you
Know about
() ->
?
smoky oak
wait can you not modify MerchantRecipe instances?
I'm trying to change the thing a villager trades
is the itemstack a reference?
wtf kinda method name is adjust
rough drift
wtf kinda method name is adjust
adjust
wooden hearth
Hey how would I send a message of a players face as I'm thinking to try and learn new things thank you
sullen marlin
I donāt think you canā¦
wooden hearth
I've seen plugins do it before
sullen marlin
Unless you make it across multiple lines
smoky anchor
Well... a small resourcepack with a pixel that you recolor & negative spaces.
Then you just read the texture server-side and color and move the pixels
But this feels like some hacky, janky solution :D
by "pixel" I mean a custom character
sullen marlin
Yeah a resourcepack could
rough drift
You could also just modify a player head's model/texture and show that
smoky anchor
you can't show items in chat
wooden hearth
Something like AquaCore displays in there lore and Chat Control displays it in image but maybe trying to convert an image into Pixel Array would work right?
young knoll
Yes
sullen marlin
I suppose heads are only 16*16 right
smoky anchor
8x8
sullen marlin
Really?
shadow night
What
sullen marlin
Thats smol
smoky anchor
I mean... look at your profile picture ?
young knoll
Yeah they are only 8x8
wooden hearth
It would be a cool feature to add in but it blows peoples minds to do it haha
young knoll
Which is good since a chat line is like 8 pixels tall
sullen marlin
Idk how many pixels my avatar is
smoky anchor
no ?
smoky anchor
show me then
rough drift
I am completely high (not really)
shadow night
Wait it isn't 16x16?
sullen marlin
Drugs are bad mkay
rough drift
it's 8x8
rough drift
Drugs are bad mkay
dw I don't do em
smoky anchor
shadow night
Well, technically it can be anything
shadow night
Well, technically it can be anything
Anything that is a power of two
sullen marlin
Steve looks fine for 64 pixels
smoky anchor
ty :D
smoky anchor
Not anymore
RIP HD heads
shadow night
Wait what
smoky anchor
not skins, but you could make HD heads
glad prawn
Something like AquaCore displays in there lore and Chat Control displays it in i...
https://www.spigotmc.org/resources/picture-login.4514/ head like this?
young knoll
I assume they want it on one line
wooden hearth
https://www.spigotmc.org/resources/picture-login.4514/ head like this?
Yeah
smoky anchor
I assume they want it on one line
I mean, this would then be half of the feature - get colors of the skin
Second half would be the moving of the character
young knoll
Yeah itās not that hard
smoky anchor
https://www.spigotmc.org/resources/picture-login.4514/ head like this?
not 16777216 colors
smh
smoky anchor
ĀÆ_(ć)_/ĀÆ
wooden hearth
I was mainly thinking to use it for when the Player Logins and show it in lore so when you hover over an item it will show the skin before disguise
slate tinsel
If I want to change which direction a falling sand block that passengers at an armor stand look at, how do I do that?
Think it was something with a type of yaw, but didn't really understand
smoky anchor
I am not sure I fully understand this question.
rough drift
Rule of thumb:
If there is a passenger, or maybe two
Remember that teleporting will never work for you
lost matrix
You could just set the yaw of the armorstand, no?
slate tinsel
I am not sure I fully understand this question.
I want to change which way the block should look, which is passengers on an armor stand
young knoll
Canāt ya just rotate the armorstand
slate tinsel
Rule of thumb:
If there is a passenger, or maybe two
Remember that teleporting ...
teleportation works if you use eject
lost matrix
I want to change which way the block should look, which is passengers on an armo...
Try to explain what the overal plan is. Maybe we have an xy problem here.
smoky anchor
Falling block can not change rotation. If you're on 1.19.something, use display entity
rough drift
teleportation works if you use eject
of... of couse
rough drift
Falling block can not change rotation. If you're on 1.19.something, use display ...
Yes
young knoll
Should look into teleporting of mounted entities
rough drift
Should look into teleporting of mounted entities
It's suppoted
spigot just... doesn't do it
I could make an ultra-quiccc pr
smoky anchor
I could make an ultra-quiccc pr
PLEASE DO
slate tinsel
Try to explain what the overal plan is. Maybe we have an xy problem here.
Okay, I want a stair to look down
smoky anchor
This is how I do it
And I hate it
https://github.com/steve6472/StevesFunnyLibrary/blob/master/src/main/java/steve6472/standalone/interactable/ReflectionHacker.java
rough drift
lost matrix
Okay, I want a stair to look down
Im not sure what that means...
rough drift
So you would just need to remove entity.isVehicle()
and you're done
welp
time to PR
lost matrix
You want a falling stair block which is facing downwards?
young knoll
teleportWithPassengers moment
smoky anchor
probably just new method ?
young knoll
Wonder if itāll explode if you try to do it across worlds
rough drift
time to remember how to make PRs
slate tinsel
Im not sure what that means...
Sorry if I'm unclear, I've made a code that currently teleports falling sand blocks that are passengers on an armor stand. I want to change the angle of these blocks.
rough drift
Wonder if itāll explode if you try to do it across worlds
you can't
young knoll
Rip
rough drift
there is literally a check
smoky anchor
Sorry if I'm unclear, I've made a code that currently teleports falling sand blo...
Display entity
lost matrix
Sorry if I'm unclear, I've made a code that currently teleports falling sand blo...
Ok but what for?
rough drift
anyways how do I make a PR I forgor
rough drift
Still gotta dismount for that then
If you teleport the sitting entity it will dismount
young knoll
Fair
rough drift
Otherwise it should probs just teleport with it
smoky anchor
If you teleport the sitting entity it will dismount
Display entity solves all of these issues
slate tinsel
Ok but what for?
To make a space rocket with stairs
lost matrix
To make a space rocket with stairs
Ah, i see. What version is this for?
young knoll
Donāt say legacy donāt say lega- wooo
Use display entities
You can transform them however you want
lost matrix
If you are a little bit patient and willing to copy some math, then this would be a good
place for display entities. They are just a little bit tricky to work with but have a much better
performance for client and server than falling blocks on armorstands.
rough drift
wait really quickly
Do I make a PR to the SpigotAPI then to CraftBukkit? Like separately? (And mention them in each-other)
lost matrix
Wasnt there something something, you need to pr both and reference the impl/api pr in the description for each other?
young knoll
Mhm
rough drift
Implemented this API
Added in [PR]
What can craftbukkit do without bukkit
rough drift
Craft
slate tinsel
If you are a little bit patient and willing to copy some math, then this would b...
So I will use display entities instead of armor stands and passengers etc, And that can be rotated?
shadow night
Can I code a plugin in nms
shadow night
Might be hard to get it loading tho
Hmmm
lost matrix
So I will use display entities instead of armor stands and passengers etc, And t...
Yes, they can have arbitrary size, rotation and translation.
I would also recommend writing generic code where you can define a cuboid of blocks
and translate it into a moving, multiblock vehicle/entity. But this is gonna get tricky if you
want to rotate the whole structure. Translation should be easy.
shadow night
If I shade in spigot api in my plugin, how bad is it
young knoll
Idk, how big is the api
rough drift
~2MB?
smoky anchor
Yes, they can have arbitrary size, rotation and translation.
I would also recomm...
And while I'm looking at this, is it a good idea to use WeakReference<Entity> ?
rough drift
fuck I actually forgot my stash pass
lost matrix
Something like this ? <https://github.com/steve6472/StevesFunnyLibrary/blob/mast...
Yeah kind of. But this lacks a ton of methods for proper transformations. The whole structure needs an anchor point and a few more methods.
rough drift
?support
undone axleBOT
uncut needle
Does it matter what directory I run it in?
lost matrix
Does it matter what directory I run it in?
No. As long as your -Dfile finds the jar from where youre at.
uncut needle
Do I run it in the projects terminal?
lost matrix
Being in the folder of the jar makes it easier as you can just use a relative path
uncut needle
the one I want to add dependency
lost matrix
You can run it in any terminal you want if you have maven installed on your pc
All this command does, is copy a .jar file into the local maven repo of your pc so that all local mvn projects
can find it in their pom.
slate tinsel
Yes, they can have arbitrary size, rotation and translation.
I would also recomm...
Guess this is the documentation for display entities?https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/entity/Display.html
uncut needle
All this command does, is copy a .jar file into the local maven repo of your pc ...
ok got it
lost matrix
Guess this is the documentation for display entities?https://hub.spigotmc.org/ja...
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/entity/BlockDisplay.html
Yeah and this is the Block impl
slate tinsel
Okey Thanks! š
orchid gazelle
Yeah kind of. But this lacks a ton of methods for proper transformations. The wh...
Aren't collisions gonna be hard AS FUCK?
young knoll
Just donāt collide
orchid gazelle
I programmed moving vehicles with custom nms FallingBlocks but then I got stuck on collisions
orchid gazelle
Just donāt collide
Ah yes, my VW Golf GTI is always passing through the wall to get to hogwarts
orchid gazelle
I programmed moving vehicles with custom nms FallingBlocks but then I got stuck ...
I actually gave the FallingBlocks the properties of Shulkers for collisions, but I encountered heavy bugs and issues with that
smoky anchor
You can't just "give falling blocks properties of shulkers"
Not server-side
orchid gazelle
You can
smoky anchor
elaborate
lost matrix
I would just draw a bounding box around that thing and check for overlaps. I would never check for individual blocks there. Way too expensive.
orchid gazelle
You override the getEntityType method of your nms FallingBlock and let it return Shulker
Boom you get collisions just like shulkers
smoky anchor
Aah
That ain't even gonna work well for the client
orchid gazelle
I would just draw a bounding box around that thing and check for overlaps. I wou...
Does that really work well?
orchid gazelle
Aah
That ain't even gonna work well for the client
Yes it didn't lol
smoky anchor
client will never know about the collision property and will try to fall through
Server will teleport the player back
Could trigger anti cheats
orchid gazelle
client will never know about the collision property and will try to fall through...
The collisions itself worked
smoky anchor
Ye, you just don't do this.
At best you can use shulkers themselves
orchid gazelle
but the client did some weird stuff and entered crawling state all the time
orchid gazelle
Ye, you just don't do this.
At best you can use shulkers themselves
Oh I tried
Did 100% the same thing as the EntityType thing
smoky anchor
hmmm maybe if it was moving, stationary shulkers should work normally
smoky anchor
huh, weird
smoky oak
@orchid gazelle shulkers retain collission when moving. spawn a ai false shulker following the moving block
orchid gazelle
I did
orchid gazelle
Wdym?
I had NoAI Shulkers being stationary in the air
You walk against it with your head, you get into crawling state mid-air
smoky oak
no like
ive been trying for a while to place shulkers where they shouldnt be
namely, at xz coords that arent mod 1 = 0
smoky anchor
You can do that if they ride a different entity
smoky oak
bleh i feared thatd be the case
wooden hearth
How would I make my plugin support all server versions and features for each version?
lost matrix
How would I make my plugin support all server versions and features for each ver...
Use the lowest spigot version you want to support as your dependency.
There is a great barrier between 1.13+ and 1.12- that often require extensive
adaptation or external libraries to support legacy versions.
wooden hearth
Use the lowest spigot version you want to support as your dependency.
There is a...
Okay thank you, I know it sounds wired but I always code in 1.8.8
lost matrix
Okay thank you, I know it sounds wired but I always code in 1.8.8
Some people are just masochists...
wooden hearth
Some people are just masochists...
Haha is that why some plugins have protocollib as a dependency
lost matrix
Hm?
Im just saying that programming in 1.8 is generally a horrible experience.
Its a decade old and it shows.
smoky oak
no, protocollib is easier than doing it yourself. some things require packets
wooden hearth
Ah okay, I use 1.8.8 because I've took a long break and that use to be the latest version but I've now came back and there's loads of different versions that's why I was asking
smoky oak
no, protocollib is easier than doing it yourself. some things require packets
side note its also possible people just shade more nowadays. our drives have grown in capacity a lot so storage space aint a concern in most cases
lost matrix
Spigot just deprecates methods until the heat-death of the universe
rough drift
Attempting to compile Bukkit with JDK 1.8 seems to fail due to org/eclipse/jdt/core/compiler/CompilationProgress being compiled by a newer JDK
shadow night
Spigot just deprecates methods until the heat-death of the universe
But some stuff that has been in bukkit for beta 1.7.3 isn't in modern bukkit/spigot, which means no support :(
wooden hearth
Is it better to make plugins from 1.8 or 1.12 because I know people like 1.8 due to the PVP
smoky anchor
Is it better to make plugins from 1.8 or 1.12 because I know people like 1.8 due...
Depends on who you're trying to target
If it is purely PVP server then sure, you can go 1.8
If not, the go latest
lost matrix
Depends on your audience and what your plugin achieves.
If you want to target pvp kiddies then go for 1.8
Otherwise dont
smoky anchor
lmao, nearly same thing
lost matrix
m
wooden hearth
Depends on who you're trying to target
If it is purely PVP server then sure, you...
I wanted to create a server core so I'm not targeting a specific type it's mainly for people who want a way to have nice and easier features for there server
pseudo hazel
then just go latest
lost matrix
I wanted to create a server core so I'm not targeting a specific type it's mainl...
Maybe this helps you decide
smoky oak
i am fairly sure thers a 1.5.2 server somewhere lol
shadow night
Maybe this helps you decide
The other 2% is me on b1.7.3
smoky oak
youre not that important lol
wooden hearth
Damn they use 1.20.1 the most
rough drift
I support 1.17.1 and up, seems to work fine
smoky oak
funny mods
mortal hare
that's called nostalgia
smoky oak
beeeg tree
mortal hare
what i miss from previous minecraft versions is the auto updating
smoky oak
what i miss from previous minecraft versions is the auto updating
?????
mortal hare
due to that removed now the community is fragmented between versions
rough drift
what auto updating
mortal hare
there was auto updating
in the minecraft launchers
when new minecraft version got released
young knoll
Back in Ye old days you played latest or you shut up
smoky anchor
Even then you had chance of going back (through third party program)
young knoll
Well you could still get old versions, but the launcher only ran latest
mortal hare
by switching bin/minecraft.jar š
nah i liked it tbh
at least we didnt had 1.8 situation
young knoll
Thatās a them issue
sterile token
If You have issues with armĆ³ stand try using the client SIDE armor stands they don't have much issues. Because they are directly in the client itself
smoky anchor
I think you forgot to reply :D
thorny berry
shadow night
Don't e mf
sick edge
Can I somehow make it so that my custom TextDisplay rotates when a player looks at it (like normal NameTags) and so that its hidden to the vehicle (player)
quaint mantle
Hi , is there server need spigot developer ?
smoky anchor
?services
undone axleBOT
If you wish to request or offer development/art/building/administration services, please do so at https://www.spigotmc.org/forums/services-recruitment-v2.54/
rough drift
Can I somehow make it so that my custom TextDisplay rotates when a player looks ...
If you do that then it can't be moved
as otherwise it will end up straight to the shadow realm
sick edge
Its not really working for me anyway as the TextDisplay is to low compared to the player body, the original name is still being shown and the player can see his own name... so I think might just use teams for color and prefixes
rough drift
Yep
ivory sleet
No it canāt but it can produce NPE @solar musk
Its specifically getOfflinePlayer(String) that may request mojang since UUID mustnt be null
Yes
young knoll
Does a display entity as passenger not hide your name?
Normally passengers hide the names of entities they ride
orchid gazelle
is there any easier way to check if an ItemStack is a Spawn-Egg than creating a Method with a Switch-Case for all spawn eggs?
young knoll
You could create a set of Materials to check against
Or check if it has SpawnEggMeta
bronze crystal
change the bstats code so the plugin is always tracked even if he disables bstats in configš¤Æ
eternal oxide
you would need to declare that your plugins forces tracking, if you did that
scenic onyx
public boolean doesPlayerTargetPlayer(Player p, LivingEntity target){
if(!target.getWorld().equals(p.getWorld())) return false;
Location head = p.getLocation().add(0, p.getEyeHeight(), 0);
Vector look = p.getLocation().getDirection().normalize();
Vector direction = head.subtract(target.getLocation()).toVector().normalize();
Vector cp = direction.crossProduct(look);
double length = cp.length();
return (length < 0.1);
}
becuse dont go, dont get error.
shadow night
Please don't name your variables cp
scenic onyx
Please don't name your variables cp
ivory sleet
Lol dont think thats what they were after
young knoll
I mean I don't think the FBI is gonna show up over a variable name
ivory sleet
I mean I don't think the FBI is gonna show up over a variable name
Yea bet that wont happen anytime soon
ivory sleet
Does a display entity as passenger not hide your name?
I think thats cuz its not a living entity, no?
ivory sleet
hmm thats interesting
young knoll
Maybe mojang hardcoded that
ivory sleet
yea fair enough
orchid gazelle
Alright, so I wanna apply special code to an Entity if it got spawned by an Item a Player was using(So ArmorStand, any Spawn Egg or ItemFrames). How tf do I do that? EntitySpawnEvent sadly does not provide a way to get the player who caused it
young knoll
EntityPlaceEvent iirc
mmh that only fires for armor stands, boats, minecarts, and end crystals.
According to the docs anyway
sick edge
Hi, when using getNewScoreboard() setPrefix() and so on dont work but with the mainScoreboard it does.. do I have to register it or smth couldnt find anything on the api
eternal oxide
if you get a new SB you have to set it for the Player
sick edge
So adding the player to it isnt enough?
hoary wing
whats the best way to get the color of a block, ive already tried getMapColor() and it works pretty decent except for the fact that is doesnt work for transparent blocks.
subtle folio
do transparent blocks have a color?
hoary wing
glass, slime,etc
dawn flower
is it possible to change the fishing speed
sick edge
Does someone know how to change the chat format (remove the <> around player name) with Adventure API?
hoary wing
is it possible to change the fishing speed
isnt lure enchant speed?
dawn flower
no like
i dont want an enchant
or changing tick speed
yea ik but how in the owrld would i do that
dawn flower
hm
"
setWaitTime(int min, int max)"
"Set both the minimum (default 100) and maximum (default 600) amount of ticks one has to wait for a fish appearing."
but how do i listen for when ur hook is in water
theres multiple events for PlayerFishEvent iirc
young knoll
Just set it on cast
bronze crystal
can I modify the plugin.yml with java? I would like to add for example a command into the plugin.yml if the user sets it to true in the config.yml
hoary wing
i'm working on this parkour generating plugin, anyone have any ideas for extra features, it can already generate parkour and it has a preview mode
sterile token
Could You the task about scheduling?
If You did the blog about using async un spigot
Just learn more about spigot scheduling
Si far i know that they don't run anything async they are just parallel executed
Using ?
Because You cant use threafs because they block the server
Right
What the diferente between running them with a executor or none
dry hazel
it runs in the forkjoin common pool if you don't specify
eternal night
sterile token
But if You don't pass an executor the Main thread is blocked untik You get the result
young knoll
No?
sterile token
Yes
young knoll
By default it uses the forkjoin common pool
Which is not in fact the main thread
Well yeah
But why tf are you using get
eternal oxide
you can;t get the result until its finished
if you try , you lock the main thread waiting
sterile token
But thats messy You have yo writen many future thing
Why there isnt a thing that wait untik completaron on other thread and then jus treturn the value directly
Instwad of doing thousans of then()
sterile token
Also that make you not able to call none async field
Wait until is computed on another thread and then return yo the thread caller
š¤
Is nt it that possible
slate tinsel
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/entity/BlockDisplay.html
Yea...
wait are different blocks different size with block display?
sterile token
Yes but yo need to use thousans of then for compelz fuctions
sterile token
I mean is not posible yo get te value async and get it back yo Main thread
slate tinsel
But you can scale them
but the diamond block was like x2 and I need to drive
"transformation.getScale().set(0.5D);" for normal size
eternal night
I mean is not posible yo get te value async and get it back yo Main thread
It is, just not at the time you requested the value
Otherwise the main thread would have to āØ wait for the value
Crazy concept
sterile token
It is, just not at the time you requested the value
Right, but why? Can't You await in a diferent thread and finally return it back yo the caller/ requested thread?
eternal night
And what does the main thread do in that time
eternal night
Okay so
You send your friend to go get apples
The friend plants the apple tree seed
Waits 3 years
Gets the apple
Comes back to you
In this time you can do stuff sure
But you can't do anything with the apple you wanted
It does not matter that it's your friend waiting for the apple to grow
It does not exist yet
sterile token
But why that? Can't you just tell many of then to plant, continue asking more yo plants while the Friends are planting
Finally when the plant grown up get notified with the value to the requested
eternal night
Yes
You can get notified 3 years down the line
That your first Apple is grown
That is what the run can do for you
You pass something that should be run/notified when the first Apple is there
wet breach
Waits 3 years
finds out the seeds from apples in stores will not grow apple trees š
eternal night
wet breach
I do like your explanation though lol
sterile token
I have seen JDA with something like:
TextResppnse smth = message.send().enqueu();
And your threead doesnt get blocked
eternal night
Because enqueue doesn't send the message
You ask your friend to give an apple to your mom
young knoll
It queues it to be sent, itāll be sent at some point in the future
eternal night
The friend goes off
Plants the tree
Waits 3 years
Gives the apple to your friend
You never get notified if that actually happened or not
You just trust your friend
The text response you get there isn't resolved yet iirc
It's a "trust me bro, I'll get a response for you at some point"
sterile token
It queues it to be sent, itāll be sent at some point in the future
Yes but there is the same as using .get() from conpletable to get the response object
young knoll
No it isnāt
You donāt get a response, you just get the message that will be sent
It hasnāt actually been sent yet
wet breach
sometimes, you just don't need a response
sterile token
I know but how info that
I want to implement that System
Because si really ugly having thousans of andThen, thenAccept
ImaginƩ having 1k of lines yo get runa async
eternal night
Literally just make a method
Call the method in your the accept
Be happy
No one is stopping you
sterile token
Hwo??
dry hazel
I am
sterile token
Because if in do future.get get blocked
sterile token
let me translate it
sterile token
I want to do some sort of consumer which allow me to get the final value directly
Instwad of using weird accept, etc
eternal night
You literally cannot
sterile token
Why?? Doesnt makese sense
eternal oxide
you are not understanding Async
eternal night
Bro I dumbed it down to a fucking apple tree
How are you so dense
The apple tree takes 3 years to grow
For the apple
There is fucking nothing you can do to get it instantly
You can do stuff while you wait
You can do nothing
sterile token
If the value is sent on the future none knowing when. You can just add many if then to queue, when is sent. Notified the Main thread giving the result object
eternal night
But you'll get your first Apple 3 years in, not a minute earlier
eternal oxide
if you call get you are WAITING for teh task to do all its work and return the result.
thin iris
i'm working on this parkour generating plugin, anyone have any ideas for extra f...
omg that really cool
sterile token
Right thats okay, i need some sort of awaition but Nome blocking
hazy parrot
Yes but there is the same as using .get() from conpletable to get the response o...
queue doesn't return execution result in jda
eternal night
Right thats okay, i need some sort of awaition but Nome blocking
You are a lost cause
eternal oxide
Right thats okay, i need some sort of awaition but Nome blocking
not possible
hazy parrot
if you want to do something with result, you use queue consumer in jda lol
sterile token
not possible
Thanks i was wondering that a true or not
Sorry if i didnt epzlain before
young knoll
Maybe letās do an example
eternal night
You clearly have 0 idea on parallel Programm
None of the concepts are java specific
If you are used to the "async" keyword magic in other languages
young knoll
CompletableFuture.supplyAsync(() -> *something that returns an object*).thenAccept(object -> doThing(object));
They just do thenaccept for you under the hood (not really, but think of it that way)
sterile token
They just do thenaccept for you under the hood (not really, but think of it that...
Yeah i'm trying tot ecretae that
Sorry if i didnt udnerstnaf well
eternal night
It is literally just syntax sugar on crack
It does the same thing
Just in pretty
eternal oxide
you create a method which will deal with the result so you call it in your thenAccept
eternal night
Given java does not allow you to implement new keywords, get reckt
sterile token
you create a method which will deal with the result so you call it in your thenA...
Oh right
sterile token
Given java does not allow you to implement new keywords, get reckt
Yeah i know that, but was planning some sort of utiltit class for that
eternal night
Future is the utility class
slate tinsel
But you can scale them
If I rotate a block does the size increase by x2 or?
young knoll
I mean if you really wanted to you could make
eternal night
You are trying to reinvent a wheel that people a lot smarter than us have already invented
young knoll
doThingAsync(supplier, consumer)
sterile token
Yes but future conpletable is a mess
eternal night
Bro šššš
sterile token
I mean i sound clound but i'm not
Just trying to ezplain nyself but can't really get understand because i ezplain nyself too bad
eternal night
You literally pass a "run this code when value" consumer and are happy
sterile token
okay but i want to get the value directly thru the consumer. I understand know?
I Will then give a deeper research thanks to all
karmic phoenix
I'm having trouble with the MySQL, it's not saving data for some reason, I've tried using a public plugin to see if the database is missing permissions or something, but it was fine, here are the classes:
Main: https://pastebin.com/Wha74unM
DatabaseManager: https://pastebin.com/ebrWbEK8
GUICommand: https://pastebin.com/Qs4m70dD
Events: https://pastebin.com/erg21cG0
Also it connects to the database but it doesn't save.
young knoll
Shh thatās too advanced
Callback stuff is fun
Sadly we canāt have callbacks for entity ticking
sterile token
I want to some sort of callbsck which return the value get from future directly
But wit none blocking
hazy parrot
how can you get apples from your friend if you dont wait for him ?
sterile token
Why won't exits? You can just queue many futures while they are running, if one is completed notify the thread caller and return the computation
hazy parrot
š
eternal oxide
if you call get on any future you just locked the main thread (unless the future has finished).
wooden hearth
Do you think this is a reasonable format for a plugin I'm working on these are all the messages ```yml
New_Player_Join: "Welcome to the server!"
Player_Join: "Welcome back to the server!"
Commands:
Spawn:
Spawn_Set: "&aSpawn was set!"
Spawn: "&aYou have been sent to the spawn!"
Invalid: "&4Invalid please do /setspawn"
Right tht what i want to listen. Why get blocked?
eternal oxide
because get is blocking
sterile token
Right thanks i Will check that
Okay why is blocking? Can't you await in another thread and finally return the result to Main thread once task is done
eternal night
Honestly trolling at this point
Pls for the love of god stop the trolling
It's not even funny
sterile token
let leave it here because me i'm troller come one bro. Im not trolling that sound rude
hazy parrot
You literally said yourself "once task is done", how can you wait for it to be done without blocking?
eternal night
You don't understand whatsoever what that keywords does in Javascript
So you think it instantly returns to the main thread
Which is completely wrong
eternal oxide
You ask a future to count to a MASSIVE number and then return the last value. If you call get on that future it can't return the result until it has finished counting. So your get forces your main thread to wait. The result doesn;t exist until the future is finished.
sterile token
You ask a future to count to a MASSIVE number and then return the last value. If...
Right
Once i'm Home i Will translate what i mean
Sorry if sound trolling but i'm not trolling
Just being wrongly explaiened
eternal night
Yea I think you just don't understand at all what other languages do when you use the "async" keyword in them
So you are under the impression that something is possible when it is not
sterile token
Right thats true i Will fully read in deep hwo the cpu manage that
young knoll
Why doesnāt java have async keyword smh my head
sterile token
any sugesttion forbette runderstnsdign
Of Java async
I wanna read first before trying to re ezplain what i was trying to do
Sorry for taking your time
fading gull
wet breach
Yea I think you just don't understand at all what other languages do when you us...
they might be misinterpreting async as meaning multi-threaded. In spigots case, async tasks do use threads but only thread workers are created for the tasks needing to be completed
eternal night
No I think they just think the async keyword magically gets the value back to the thread it was "called" on XD
ivory sleet
JavaScript async is almost equivalent to Java CompletableFuture
JavaScript await is almost equivalent to CompletableFuture#join()
@sterile token in short
thats pretty much all u need to know to understand their similarities (not true but to dumb it down)
eternal night
Dangerous statement for the JS experts in the discord
ivory sleet
š„²
wet breach
lol
sterile token
JavaScript **async** is almost equivalent to Java **CompletableFuture**
JavaScr...
Oh okay, thanks man
ivory sleet
and async is pretty much just shorthand for Promise in JavaScript if you haven't realized it
sterile token
I know promise
ivory sleet
mhm
sterile token
I'm trying to soft of it but getting the value directly
ivory sleet
soft of it?
eternal night
async in Javascript is pretty much just a syntactic sugar to configure the promises for you.
Promises are CompletableFutures in java.
Java does not have a syntactic sugar like JavaScripts async keyword to configure the promise chains for you
(I say pretty much because async does some more complex stuff, but think of it that way)
ivory sleet
yeah we need valhalla and structured concurrency
sterile token
yeah we need valhalla and structured concurrency
I'm trying to find out if there is already a system for Java. Which allows you to get the result of a task once it is finished, but that is none blocking. For example, using the join() or get() that you mention
ivory sleet
so sad it just got set to preview in j21
ivory sleet
def not
young knoll
Idk maybe John java has plans
eternal night
I'm trying to find out if there is already a system for Java. Which allows you t...
that concept does not work
You still have the wrong concept
sterile token
that concept does not work
Okay thanks not need for being before rude saying i'm trolling
ivory sleet
I'm trying to find out if there is already a system for Java. Which allows you t...
I mean, on whatever thread you call get() or join() on, it will be blocking because that thread has to wait for the value to return
sterile token
I mean, on whatever thread you call get() or join() on, it **will be blocking** ...
Right, what about with an executor like ForkJoin
ivory sleet
doesnt matter
sterile token
Okay, perfect thats okay
ivory sleet
doesnt matter what language, what object or what interface u use
if u wna do something once the value returns without blocking you will need to use callbacks
sterile token
I thought it worked this way.
You load a lot of tasks to be completed at another time, while they are being processed your thread is still on something else. Once x task is finished, the thread that called it is notified and the result is returned.
ivory sleet
basically a callback
except
"and the result is returned"
cuz that means blocking essentially
sterile token
Like they do with SQL, once value si received they expose it
eternal night
once
sterile token
okay the rgijt name si a callback
ivory sleet
yea, but callbacks are called by the task when its finished, IN COMPARISON to join() or get() which is called by you
and well... if the task is not finished, then join() or get() will wait for the task to finish => shiaazzzooop BLOCKING
karmic phoenix
I'm having trouble with the MySQL, it's not saving data for some reason, I've tried using a public plugin to see if the database is missing permissions or something, but it was fine, here are the classes:
Main: https://pastebin.com/Wha74unM
DatabaseManager: https://pastebin.com/ebrWbEK8
GUICommand: https://pastebin.com/Qs4m70dD
Events: https://pastebin.com/erg21cG0
ivory sleet
any errors or anything in console?
karmic phoenix
No errors.
sterile token
any errors or anything in console?
Is the driver imported?
karmic phoenix
via pom.xml?
sterile token
You can't execute SQL witout the MySQL conector driver
karmic phoenix
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<version>8.1.0</version>
</dependency>
Ok, is inside your compiled sources
Because if you don't include the driver within your plugin, it won't run any sql requeste
young knoll
The driver is already shaded in spigot
sterile token
The driver is already shaded in spigot
Oh right, i never make it work like that
karmic phoenix
Is the code fine tho?
sterile token
Have try souting the connection.isConnected()
karmic phoenix
if (databaseManager.testConnection()) {
getLogger().info("Connected to the database.");
} else {
getLogger().severe("Plugin could not connect to the database.");
setEnabled(false);
}
Cache the connection in getConnection method
wooden hearth
Hey is there a way to get an alt account without buying a new account for development purposes
karmic phoenix
Cache the connection in getConnection method
I've got this warning in ij:
NameColors-1.0.jar, SpiGUI-1.3.1.jar, mysql-connector-j-8.1.0.jar, protobuf-java-3.21.9.jar define 1 overlapping resource:
- META-INF/MANIFEST.MF
maven-shade-plugin has detected that some class files are
present in two or more JARs. When this happens, only one
single version of the class is copied to the uber jar.
Usually this is not harmful and you can skip these warnings,
otherwise try to manually exclude artifacts based on
mvn dependency:tree -Ddetail=true and the above output.
See http://maven.apache.org/plugins/maven-shade-plugin/
online-mode: false
young knoll
Just be careful testing in offline mode
quaint mantle
I've got this warning in ij:
```
NameColors-1.0.jar, SpiGUI-1.3.1.jar, mysql-co...
It says some of deps have exact same jar
young knoll
Since itās a bit different than online
quaint mantle
uuid is cursed
karmic phoenix
It says some of deps have exact same jar
Could this be what causing the issues?
quaint mantle
Idk. It just a warning
young knoll
Should be fine
young knoll
Have you tried it without shading the connector
wooden hearth
I don't quite understand
Whatās SpiGUI
wooden hearth
makes making GUIs easier
Got a link?
karmic phoenix
wooden hearth
https://github.com/SamJakob/SpiGUI
Thank you, I will have to have a look might add it to my core
young knoll
Notice how for spigot api you have <scope>provided</scope>
karmic phoenix
Yes, should I do the same for the mysql?
I discovered something, I've added a row in data having my uuid and namecolor selected and it works fine, even if i change colors but once i remove that row it doesnt add it back once i change the color.
wooden hearth
I discovered something, I've added a row in data having my uuid and namecolor se...
run us trough what you're trying to do?
karmic phoenix
Once a player select a name color via /color it supposed to save the color selected in the MySQL and retrieve it once they join back.
But it doesn't save it for some reason.
wooden hearth
Once a player select a name color via /color it supposed to save the color selec...
are you updating the column and can I see your save part?
karmic phoenix
Got a question lmao, is chatgbt illegal here, cuz it fixed the issue š¤£
wooden hearth
Got a question lmao, is chatgbt illegal here, cuz it fixed the issue š¤£
I use it sometimes to see if I'm doing it correct but it still has a small database so I would say keep learning and trying as trial and error
wooden hearth
Got a question lmao, is chatgbt illegal here, cuz it fixed the issue š¤£
What you making anyway?
karmic phoenix
A name color system for my server.
Players can select name colors and go to different gamemodes and it would sync.
via Mysql.
wooden hearth
Oh nice, dm if you want I'm making something similar but has way more features
I like to connect with other devs aswell
karmic phoenix
All I'm good at is making good GUI designs
wooden hearth
All I'm good at is making good GUI designs
Oh nice, I might need your help lol
karmic phoenix
Feel free to dm me whenever u need me
wooden hearth
Feel free to dm me whenever u need me
Alright thank you man
brazen badge
Anyone can help me? I want that when I click a block I want to check if the block clicked is a skull with a custom base64 that I've in config
worldly ingot
I'd opt for the first so you're not creating new objects when you don't need to
quaint mantle
cant you just return null
well
the bukkit api is annoying when they return null instead of air
but then u cant use null in place of air in their api
quaint mantle
I'd opt for the first so you're not creating new objects when you don't need to
wdym they have the same purpose
they both create new objects
worldly ingot
Yes but the second one does it conditionally
The first one does it every time to pass it as a method argument
quaint mantle
ohh i see
worldly ingot
That requireNonNullElse() is best used for something like a constant default value
hushed spindle
i'm trying to restructure my project to have multiple modules so that i can support multiple versions of nms, but now im getting a maven error saying i don't have the mojang mappings during packaging
Failure to find org.spigotmc:minecraft-server:txt:maps-mojang:1.19-R0.1-SNAPSHOT-R0.1-SNAPSHOT
though in my .m2 folder i just used buildtools to generate them. i've invalidated caches too and stuff, any ideas?
worldly ingot
If no lore is set the list will be null
You can have lore with no entries
_Not that it renders any differently, but that's just how it works :p _
quaint mantle
alr
worldly ingot
Lore: [] vs no Lore tag at all
brazen badge
Anyone can help me? I want that when I click a block I want to check if the bloc...
?
young knoll
You can check the data of a skull on the ground via its BlockState
lilac dagger
I love block states
brisk estuary
does anybody know any plugin that mocks players so I can execute commands on them? (1.20 compatible) So I can test my plugin š„²
young knoll
You can try mockbukkit, which isnāt a plugin but a library for unit testing
Other than that idk if anything exists for it
brazen badge
You can check the data of a skull on the ground via its BlockState
e.getClickedBlock().getState().hasMetadata("eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMWMyMWViYzAwMzAxMmIxMjhjNTEwYTg1OThlMTM5ZjUxZjBlYzg4YmE1Y2VhNTg1ZWYwMDdlZDc1NDgzN2ZlMyJ9fX0=w")
?
young knoll
No
young knoll
GetState, cast to Skull, then use getOwnerProfile
Then you can get the textures from that, then the url, then do all the base64 stuff
Alternatively, just add some pdc to the placed skull
lost matrix
```java
e.getClickedBlock().getState().hasMetadata("eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7...
BlockState -> Skull -> PlayerProfile -> PlayerTextures -> URL (getSkin()) -> check for equality
quaint mantle
can i get help with nametagedit and why wont it display the tags?
ocean hollow
Do chunks have a Persistent Data Holder? When turned off, does the server save information from there?
lost matrix
Do chunks have a Persistent Data Holder? When turned off, does the server save i...
They are are PersistentDataHolder and the data gets saved in its nbt file when the chunk is unloaded
hushed spindle
i ran buildtools with the following command
java -jar BuildTools.jar --rev 1.19 --remapped
and still get the error when packaging
Failure to find org.spigotmc:minecraft-server:txt:maps-mojang:1.19-R0.1-SNAPSHOT-R0.1-SNAPSHOT
anyone have an idea where else this error could come from
wait its saying snapshot twice maybe thats it lol
lost matrix
i ran buildtools with the following command
`java -jar BuildTools.jar --rev 1.1...
Use a valid version. 1.19.2
peak depot
do serialized Itemstacks also serialize Enchanments?
hushed spindle
yeah that was the issue, im not sure how it got there to begin with but
hushed spindle
do serialized Itemstacks also serialize Enchanments?
depends how you serialize them, but generally yeah
peak depot
ByteArrayOutputStream io = new ByteArrayOutputStream();
BukkitObjectOutputStream os = new BukkitObjectOutputStream(io);
os.writeObject(is);
os.flush();
byte[] serializedObject = io.toByteArray();
encoded = Base64.getEncoder().encodeToString(serializedObject);
is in that case "is" is the itemstack
storm crystal
is is actually okay to ask java specific questions here?
brazen badge
BlockState -> Skull -> PlayerProfile -> PlayerTextures -> URL (getSkin()) -> che...
Sorry, I don't understand
hazy parrot
is is actually okay to ask java specific questions here?
Y
storm crystal
is it possible to make an instance of a class inside of it?
hazy parrot
How would that make sense
Class already have "state" of its instance
Idk if I worded that correctly
What are you trying to do
storm crystal
im... well learning basics of java
and this one seems to work just fine
it prints out 5
hazy parrot
I mean you can create instance of class inside of it, it's used for singleton for example
storm crystal
can I create main method that system would start from outside of class?
or do methods need to be inside of a class?
hazy parrot
can I create main method that system would start from outside of class?
Not yet
Main have to be inside of class currently
But it will soon be possible
It's in preview state
lilac dagger
I'd love if they expand this concept to utility methods
Tho i assume main being classless is just sugar
quaint mantle
hii im new to spigot, is there a reason why Player#isOnGround() is deprecated?
eternal oxide
read the deprecation note
lilac dagger
Because there are better ways to check it
eternal oxide
?jd-s
undone axleBOT
storm crystal
why do I get this error all the time, Im trying to edit array in my method, while array is declared in class
lilac dagger
Sounds like static abuse
quaint mantle
why do I get this error all the time, Im trying to edit array in my method, whil...
it says the error for you
storm crystal
great but it doesnt explain what static context even is
storm crystal
basic java knowledge
mhm
lilac dagger
You need to access fields through objects
You're trying to get a field that is object specific by using the class name
hushed spindle
you're basically trying to access a property like
Class.property
this property is not static, and so it can't be referenced from a static context
static properties are properties belonging to the class, while non-static properties are properties belonging to instances of said class
you're probably misusing static as an easy way to just "get" a property you think you want
show your class and we can show you
storm crystal
eh ill just dump everything into a method
hushed spindle
how to avoid learning 101
peak depot
how should I do potions if all of the constructors are deprecated:
storm crystal
why i cant make empty array and then add numbers
hushed spindle
we dont know if you dont show us what you got
oh an array, no thats because arrays are of a fixed length
eternal oxide
why i cant make empty array and then add numbers
you have to define the array size at creation if you want to add later
hushed spindle
if you want a list you can add elements to you need an arraylist
storm crystal
you have to define the array size at creation if you want to add later
but thats my entire point to make it as long as user wants to
hushed spindle
or a set if you don't need duplicate entries, sets are faster too
eternal oxide
but thats my entire point to make it as long as user wants to
then you don't want an array
list or set
storm crystal
idk it worked in python
hushed spindle
python isnt java
eternal oxide
this is not python
hushed spindle
i believe arrays are converted to lists under the hood in python
so you can just add shit to it
lost matrix
idk it worked in python
Python doesnt really have arrays natively. [] is a list.
storm crystal
just doesnt work
hushed spindle
you said you want numbers in that list right
List<Integer> list = new ArrayList<>();
storm crystal
you said you want numbers in that list right
List<Integer> list = new ArrayList<...
no I want every type
lost matrix
just doesnt work
Your IDE should import it automatically. Also a list cant store any arbitrary object.
Only objects of one type.
List<String> someList = new ArrayList<>();
well at least integer and strings
storm crystal
numbers 0-9 and operators like + - / * =
lost matrix
well at least integer and strings
Its possible but you should 100% never mix different objects inside a collection.
hushed spindle
you wanna allow players to make formulas?
sounds like you dont need a list at all and just a string
which is just an array of chars but thats besides the point
storm crystal
no im trying to make a calculator
hushed spindle
..right
storm crystal
which I have already done in python but it just doesnt work at all
hushed spindle
because you're refusing to learn away from python
java is a very different language from python
lilac dagger
How exactly does it work?
hushed spindle
on a surface level anyway
lost matrix
which I have already done in python but it just doesnt work at all
https://github.com/Redempt/Crunch
This library can evaluate complex mathematical expressions. Its written by a fellow spigot dev.
storm crystal
How exactly does it work?
it gets input from you by order number, operation, number, operation etc. until you hit "=" and then merges let's say 5/2 into 2.5 by changing "/" into 2.5 and deleting both 5 and 2
does it until there is no +, -, * or / left
lost matrix
it gets input from you by order number, operation, number, operation etc. until ...
That sounds like you should create a bunch of different classes for this
lost matrix
So you have clean, readable and reusable code and not just an utter mess like you often get with python.
warped shell
when was EntityChangeBlockEvent added to the api?
slate tinsel
If I want to rotate the block to the right so that it is in the opposite direction as the block to the left what should I write then if the first block is "1" on "transformation.getLeftRotation().x" it shouldn't be like -1 or I think all wrong?
So it goes like this:
storm crystal
So you have clean, readable and reusable code and not just an utter mess like yo...
you can shit on python all day if you want but that wont stop me from learning it because I've got an exam to pass
but thats beside the point
point being Ive got no idea how to conceptualize how I would do things in python to java
lost matrix
How extensive do you want your expressions to be? Because writing even a half decent expression evaluator
is very difficult.
lilac dagger
It can be done statically, but java is a oop language
If you're just parsing the string
lost matrix
If I want to rotate the block to the right so that it is in the opposite directi...
Try PI or PI/2
storm crystal
How extensive do you want your expressions to be? Because writing even a half de...
I dont know what expression evaluator is
neither do I know parsing the string
hushed spindle
what you're trying to make is an expression evaluator
storm crystal
you mean calculator?
hushed spindle
a calculator evaluates expressions
storm crystal
well whatever what does static even mean
lilac dagger
Static let's you attach methods fields to a class rather than a object
hushed spindle
non-static properties are properties belonging to an object, or an instance of said class
lost matrix
A class cant really be used on its own. Its just a blueprint for an object.
You need to create instances of that class if you want to use it by using the new keyword.
hushed spindle
i.e. all vehicles (for the sake of simplicity) have wheels
not all vehicles are electric
flawed analogy but just so you can picture it
hushed spindle
its just for the sake of simplicity
quaint mantle
and primitives
hushed spindle
the guy is new
if you want people to learn things you gotta start with something at their level
and build on that
quaint mantle
and dont forget about lambdas
hushed spindle
why use nms when server#getEntity() exists
lilac dagger
and dont forget about lambdas
They're still objects to me
quaint mantle
They're still objects to me
they are actually not
storm crystal
A class cant really be used on its own. Its just a blueprint for an object.
You ...
so like what am I supposed to do it outside of class or what
hazy parrot
they are actually not
They are not?
quaint mantle
they arent objects as you may think, they have own type called Lambda in reflection
and they cant really store anything
lost matrix
so like what am I supposed to do it outside of class or what
You write a class and create an instance of that class.
storm crystal
great but I literally have main method that starts from inside of a class, if it starts code from that class why I cant take a variable that I made in that class as well?
lilac dagger
It's weird, i can pass them into lists and such, doesn't make sense for them not to be objects
quaint mantle
It's weird, i can pass them into lists and such, doesn't make sense for them not...
they arent objects, they do not behave as an object
they behave as an unnamed interface
that has only one method to implement
quaint mantle
they dont have name and true type is hiden
quaint mantle
You mean an anonymous class?
anonymous class is an object
slate tinsel
Try ``PI`` or ``PI/2``
Hmm, doesn't seem to work, just goes like this:
lost matrix
where interface isnt an object
Runnable something = () -> System.out.println("Test");
This results in an anonymous class, implementing the Runnable interface
quaint mantle
```java
Runnable something = () -> System.out.println("Test");
```
This results ...
no, java uses runnable as wrapper around Lambda type
and Runnable is interface
not an actual class
lost matrix
no, java uses runnable as wrapper around Lambda type
Explain what that means
slender elbow
š¤ erm actually it's a hidden class
quaint mantle
lambda expression werent added before java 1.8
storm crystal
whats the difference between class, method, field or object
hushed spindle
why overcomplicate this with technicalities
lost matrix
Bc last time i checked the Java compiler generates bytecode that creates an anonymous class that implements the Runnable interface and provides the implementation for the run method by using the lambda expression as the body.
slender elbow
no
quaint mantle
Bc last time i checked the Java compiler generates bytecode that creates an anon...
no longer true
anyways
class is a declaration of type
method is a function on some class
field is just variable on some class
and object is initialization of class
smoky oak
can someone help me for a sec? my intellij aint starting
hushed spindle
lets use cars as analogy
class is the "blueprint" for the car
object is a new Car
method is the behavior of the car, a car can drive()
field can represent a property of the car, a variable, like a car has int wheels = 4
lost matrix
no longer true
Since which java version? I want to compile and see for myself
Im just gonna use 17
quaint mantle
Since which java version? I want to compile and see for myself
when lambda declaration been added, also it isnt about bytecode but how jvm recognizes the implementation, and thats why i hate doing reflection on lambda expressions in java becuz you use Lambda type instead of the actual type
storm crystal
lets use cars as analogy
class is the "blueprint" for the car
object is a `new` ...
so why is my program starting all the time from just a blueprint that doesnt really exist until its used as an object?
hushed spindle
because java always starts at the main class
quaint mantle
becuz jvm makes it exist
hushed spindle
you gotta start somewhere and so java makes you start at main
storm crystal
okay but why doesnt it also start variables when i set them in here
hushed spindle
well it should, depends on how you do it and how you're accessing them
thats the part you're likely not understanding
and we cant help you until you show us
storm crystal
like what
hushed spindle
tf you mean like what
ivory sleet
Bc last time i checked the Java compiler generates bytecode that creates an anon...
dont think this ever was the case?
rough drift
So you have clean, readable and reusable code and not just an utter mess like yo...
I actually made some readable python code
ivory sleet
I mean if u anonymously instantiate a functional interface then yes it would be anonymous
else nope
storm crystal
tf you mean like what
show you what
hushed spindle
your class that you're having this problem in??
rough drift
I actually made some readable python code
then made it unreadable because a function call (not the actual code, like literally calling the function) was taking 14 seconds because "python is fast /s"
hushed spindle
your code
anyway, i got a multi-module project and the server isnt seeing where my plugin.yml is, im not sure where to look on how to sorta set one of these modules as the main plugin
rough drift
so what you do is you have your module with your plugin.yml in resources and it depends on all the other modules as dependency
and you just shade the others in
ivory sleet
anyway @lost matrix here https://cr.openjdk.org/~briangoetz/lambda/lambda-translation.html
hushed spindle
it should already be doing that
ivory sleet
(and yes as emily said, there is sorta hidden class which is classloaderless^^)
rough drift
and a list isn't an array
hushed spindle
you cant access non-static stuff from static methods
storm crystal
why not make main non-static
storm crystal
so I need to add static to every single piece because yes?
why isnt it default then
ivory sleet
why not make main non-static
java has considered doing that (heck thereis even a feature enhancement proposal about it)
storm crystal
I still cant run code
rough drift
why isnt it default then
because
you shouldn't run your code in main
main should be the entry point which launches a non-static class
karmic phoenix
I'm having trouble with the MySQL, it's not saving data for some reason, I've tr...
I got this to work but I get an error when someone joins: java.sql.SQLNonTransientConnectionException: No operations allowed after connection closed.
rough drift
and you're missing generic types
rough drift
let me give an example
lilac dagger
Oh, so lambdas are mostly anonymous methods
rough drift
lambdas create an instance of the interface and it is stored as a non-named class
slate tinsel
Try ``PI`` or ``PI/2``
Have tried with PI etc. doesn't seem to get the right angle, maybe you know of another solution, or should yours work?
ivory sleet
Oh, so lambdas are mostly anonymous methods
well ig thats one way to spell it out
rough drift
public class MyClass {
public static void main(String[] a) {
new MyClass().runCode();
}
public void runCode() {
// Run your code
}
}
```I would do this (maybe even main in another class)why
rough drift
because you shouldn't make everything static
rough drift
also that ^
storm crystal
which is?
lilac dagger
Java is object oriented
Python and c are different in this aspect
Tho python also has object support
It's just a later lesson
And not needed for most basic tasks
rough drift
then made it unreadable because a function call (not the actual code, like liter...
@slender elbow the method was in an object, so you're right
it looks up the name every time you call the function
and loads it